The National Wrestling Alliance (NWA) member NWA San Francisco promoted a professional wrestling tag team championship under the name NWA World Tag Team Championship from 1950 until 1961 in and around their local territory until it closed. When San Francisco based Big Time Wrestling became a member of the NWA in 1968 they began promoting their version of the NWA World Tag Team Championship as part of their shows until the championship was abandoned in 1979. The NWA rules allowed each individual member to promote a championship under that name, which meant there were several NWA World Tag Team Championships promoted across North America at some point between 1950 and 1982, with two different versions being promoted in San Francisco, although not at the same time. At one point in 1957 no les